China 100% Original Castable Polyurethane Shoe Upper Prepolymer - Donpipe 302 HCFC-141b base blend polyols for pipeline insulation – INOV Manufacturer and Supplier

100% Original Castable Polyurethane Shoe Upper Prepolymer - Donpipe 302 HCFC-141b base blend polyols for pipeline insulation – INOV

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100% Original Castable Polyurethane Shoe Upper Prepolymer - Donpipe 302 HCFC-141b base blend polyols for pipeline insulation – INOV Detail:

Donpipe 302 HCFC-141b base blend polyols for pipeline insulation

INTRODUCTION

This product is a type of blend polyols premixed with HCFC-141B, which is specially researched for rigid PUF to produce thermal insulation pipes. It is widely used in steam pipes, liquefied nature gas running pipes, oil pipes and other fields. The characteristics are as follows:

(1) good flowability, by regulating formula to suit different pipe diameters.

(2) excellent low temperature dimensional stability

PHYSICAL PROPERTY

Appearance	Light yellow to brown transparent liquid
Hydroxyl value mgKOH/g	300-450
Dynamic viscosity（25℃） mPa.S	200-500
Density （20℃） g/ml	1.10-1.16
Storage temperature ℃	10-25
Storage stability month	6

TECHNOLOGY AND REACTIVITY (Component temperature is 20℃, the actual value is varied according to pipe diameter and processing condition.)

	Manual mixing	High pressure machine
Ratio（POL/ISO）	1:1.10-1.1.60	1:1.10-1.60
Rise time s	20-40	15-35
Gel time s	80-200	80-160
Tack free time s	≥150	≥150
Free density kg/m³	25-40	24-38

FOAM PERFORMANCES

Mold density	GB 6343	55-70kg/m³
Closed-cell rate	GB 10799	≥90%
Thermal conductivity （15℃）	GB 3399	≤24mW/(m.K)
Compression strength	GB/T8813	≥200kPa
Water absorption	GB 8810	≤3（V/V）%
Dimensional stability 24h -30℃	GB/T8811	≤1.0%
24h 100℃	GB/T8811	≤1.5%

The data provided above are typical value, which are tested by our company. For our company’s products, the data included in the law do not have any constraints.

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